After another beta test, after listening to the advice came to the conclusion and changed:
1. Hero jump (reduced gravity by 0.1)
2. Reduced mask circular saws.
3. Battle 1 boss (added a few seconds to attack in the form of flight of the bomb after the injury)
4. Corrected the objects on which the hero could hit his head.
5. Tweaked the continue/ new game tabs
6. Added a variable that will add speed to the jump making it a little further.
7. Added larger particles of the blood.
8. Added indicator lives bosses
9. Fixed a bug with the destruction of enemies on different levels.
10. Added the appearance of dust when jumping.